Thank you, mrbennetts!
Yes that certainly looks like it.
Rassemblement à la base sous marine: Une Talbot Tagora | Flickr - Photo Sharing!
I believe Simca and Talbot were Chrysler owned for a while. "When you send us the engine and gearbox, could you throw in a pair of headlights for our new Brigand as well?" I find these lights make the Brigand look really cool. Peugeot took over the European Chrysler organization, and the lights are very similar to the 604s, although not quite identical.
So are the Britannia's front lights (that seem to have found their way onto a few of the Brigands as well) from the Talbot Solara/Chrysler Alpine, or any of the other cars in the Chrysler/Talbot/Peugeot stable?
They're similar to, but not quite like the Simca 1307's:
Simca-Chrysler 1307 S | Flickr - Photo Sharing!